using UnityEngine;
using System.Collections;

public class CompletePlayerController : MonoBehaviour {

    public float speed;                //Floating point variable to store the player's movement speed.

    private Rigidbody2D rb2d;        //Store a reference to the Rigidbody2D component required to use 2D Physics.

    // Use this for initialization
    void Start()
    {
        //Get and store a reference to the Rigidbody2D component so that we can access it.
        rb2d = GetComponent<Rigidbody2D> ();
    }

    //FixedUpdate is called at a fixed interval and is independent of frame rate. Put physics code here.
    void FixedUpdate()
    {
        //Store the current horizontal input in the float moveHorizontal.
        float moveHorizontal = Input.GetAxis ("Horizontal");

        //Store the current vertical input in the float moveVertical.
        float moveVertical = Input.GetAxis ("Vertical");

        //Use the two store floats to create a new Vector2 variable movement.
        Vector2 movement = new Vector2 (moveHorizontal, moveVertical);

        //Call the AddForce function of our Rigidbody2D rb2d supplying movement multiplied by speed to move our player.
        rb2d.AddForce (movement * speed);
    }
}

using UnityEngine;
using System.Collections;

public class CompleteCameraController : MonoBehaviour {

    public GameObject player;        //Public variable to store a reference to the player game object


    private Vector3 offset;            //Private variable to store the offset distance between the player and camera

    // Use this for initialization
    void Start () 
    {
        //Calculate and store the offset value by getting the distance between the player's position and camera's position.
        offset = transform.position - player.transform.position;
    }

    // LateUpdate is called after Update each frame
    void LateUpdate () 
    {
        // Set the position of the camera's transform to be the same as the player's, but offset by the calculated offset distance.
        transform.position = player.transform.position + offset;
    }
}